Panasonic CS-A24BB4P Service Manual page 138

<If the float switch operates again after turning off> / <If the
float switch continues to be off>
27.3. Freezing prevention control
1. Operation / During cooling mode operation, after 9 minutes have
passed since the compressor turned on, the outdoor unit will stop
its operation when the temperature detected by the indoor unit
pipe temperature sensor is 2°C or lower. / The indoor unit
continues operating at the fan speed set by the remote control.
(The remote control display does not change.)
2. Cancelling / This control is cancelled when the temperature
detected by the indoor unit pipe temperature sensor is 15°C or
higher, however 3 minutes waiting of prevention control is
necessary. / (The 9 minutes countdown is cleared while the
compressor is stopped.)
(The above illustration only shows the operation stops due to
freezing prevention control of the indoor pipe temperature sensor.)
27.4. Heating mode operation time chart (Heat pump type)
138